Andy Dixon
df8b10c6dd
Cell canvas renderer with frame cache and a perceptual 256-colour quantizer; responsive geometry (large/medium/small/too-small); squarified treemap with nested previews, LOD grouping, category colouring and adaptive labels; spatial arrow navigation with stable NodeID selection; zoom and breadcrumbs; modal system (info, help, confirm, save); list, file-type, top-N, scan-info, duplicate and comparison views; live search/filter; mouse support; move-to-trash.
409 lines
10 KiB
Go
409 lines
10 KiB
Go
package tui
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import (
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"fmt"
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"strings"
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"time"
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tea "charm.land/bubbletea/v2"
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"github.com/charmbracelet/colorprofile"
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"github.com/andydixon/mapsize/internal/brand"
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"github.com/andydixon/mapsize/internal/inventory"
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"github.com/andydixon/mapsize/internal/textutil"
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"github.com/andydixon/mapsize/internal/treemap"
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)
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// Minimum usable terminal size.
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const minW, minH = 40, 10
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type sizeClass int
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const (
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tooSmall sizeClass = iota
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small
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medium
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large
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)
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// geometry is the panel layout for one terminal size. It is recomputed from
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// scratch for every frame, so resizing can never leave stale geometry.
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type geometry struct {
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class sizeClass
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tabs, crumbs treemap.Rect // tabs is empty in the small layout
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main, side, info, stat treemap.Rect
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}
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func computeGeometry(w, h int) geometry {
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g := geometry{}
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switch {
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case w < minW || h < minH:
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g.class = tooSmall
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return g
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case w >= 150 && h >= 36:
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g.class = large
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case w >= 90 && h >= 22:
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g.class = medium
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default:
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g.class = small
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}
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y := 0
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if g.class >= medium {
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g.tabs = treemap.Rect{X: 0, Y: 0, W: w, H: 1}
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y = 1
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}
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g.crumbs = treemap.Rect{X: 0, Y: y, W: w, H: 1}
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y++
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bottom := h - 1
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g.stat = treemap.Rect{X: 0, Y: h - 1, W: w, H: 1}
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if g.class >= medium {
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g.info = treemap.Rect{X: 0, Y: h - 2, W: w, H: 1}
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bottom = h - 2
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}
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g.main = treemap.Rect{X: 0, Y: y, W: w, H: bottom - y}
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if g.class == large {
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sw := min(40, w/5)
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g.side = treemap.Rect{X: 0, Y: y, W: sw, H: g.main.H}
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g.main.X, g.main.W = sw, w-sw
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}
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return g
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}
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func (m *Model) render() string {
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t := m.theme
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cv := NewCanvas(m.w, m.h, t.base())
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m.hits = m.hits[:0]
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g := computeGeometry(m.w, m.h)
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if g.class == tooSmall {
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m.renderTooSmall(cv)
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return cv.Render(m.profile == colorprofile.ANSI256)
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}
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m.tree.RLock()
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defer m.tree.RUnlock()
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m.ensureSelection()
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if g.tabs.W > 0 {
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m.paintTabs(cv, g.tabs)
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}
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m.paintCrumbs(cv, g.crumbs)
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if !g.side.Empty() {
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m.paintSide(cv, g.side)
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}
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m.views[m.view].paint(m, cv, g.main)
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if !g.info.Empty() {
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m.paintInfoLine(cv, g.info)
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}
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m.paintStatus(cv, g.stat, g.class)
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if g.class == small && m.search.editing {
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m.paintSearch(cv, g.stat)
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}
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if len(m.modals) > 0 {
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m.paintModal(cv)
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}
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return cv.Render(m.profile == colorprofile.ANSI256)
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}
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func (m *Model) renderTooSmall(cv *Canvas) {
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st := m.theme.muted()
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lines := []string{"Terminal too small", fmt.Sprintf("%d×%d — need %d×%d", m.w, m.h, minW, minH), "q quits"}
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y0 := max(0, (m.h-len(lines))/2)
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for i, l := range lines {
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cv.TextCentered(0, y0+i, m.w, l, st)
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}
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}
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// paintTabs draws the view tabs and mode chips.
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func (m *Model) paintTabs(cv *Canvas, r treemap.Rect) {
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t := m.theme
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cv.Fill(r, " ", t.header())
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badge := " ◧ " + brand.Name + " "
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if t.ASCII {
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badge = " " + brand.Name + " "
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}
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x := cv.Text(r.X, r.Y, badge, r.W, Style{FG: t.textOn(t.Accent), BG: t.Accent, Attr: Bold | m.monoRev()})
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x++
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for i, v := range m.views {
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label := " " + v.name() + " "
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st := Style{FG: t.Muted, BG: t.HeaderBg}
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if i == m.view {
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st = Style{FG: t.Fg, BG: t.Bg, Attr: Bold | Underline}
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}
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if x+textutil.Width(label) >= r.W-30 {
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break
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}
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w := cv.Text(x, r.Y, label, r.W-x, st)
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idx := i
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m.hits = append(m.hits, hit{treemap.Rect{X: x, Y: r.Y, W: w, H: 1}, func(m *Model, _ bool) tea.Cmd { m.setView(idx); return nil }})
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x += w
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}
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// Right-aligned chips.
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var chips []struct {
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s string
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bg Color
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}
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add := func(s string, bg Color) {
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chips = append(chips, struct {
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s string
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bg Color
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}{s, bg})
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}
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if m.opts.ReadOnly {
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add("READ ONLY", t.Err)
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}
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if m.snapshot {
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add("SNAPSHOT", t.Accent)
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}
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if m.opts.Diff != nil {
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add("COMPARE", t.DiffNew)
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}
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if m.search.query != nil {
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add("FILTER", t.Warn)
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}
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if len(m.tree.Stats.Excludes) > 0 {
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add(fmt.Sprintf("EXCL %d", len(m.tree.Stats.Excludes)), t.Faint)
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}
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add(strings.ToUpper(m.sizeMode.String()), t.Faint)
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rx := r.X + r.W
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for i := len(chips) - 1; i >= 0; i-- {
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s := " " + chips[i].s + " "
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w := textutil.Width(s)
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if rx-w-1 < x {
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break
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}
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rx -= w
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cv.Text(rx, r.Y, s, w, Style{FG: t.textOn(chips[i].bg), BG: chips[i].bg, Attr: Bold | m.monoRev()})
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rx--
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}
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}
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func (m *Model) monoRev() Attr {
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if m.theme.Mono {
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return Reverse
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}
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return 0
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}
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// paintCrumbs draws "/ › home › andy" breadcrumbs, truncated from the left,
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// with the zoom root's size on the right.
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func (m *Model) paintCrumbs(cv *Canvas, r treemap.Rect) {
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t := m.theme
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cv.Fill(r, " ", t.header())
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tr := m.tree
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z := tr.Node(m.zoom)
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size := m.sizeOf(m.zoom)
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right := " " + textutil.Size(size)
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if root := m.sizeOf(tr.Root()); m.zoom != tr.Root() && root > 0 {
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right += " " + textutil.Percent(size, root) + " of scan"
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}
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if m.search.result != nil {
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right += fmt.Sprintf(" (%s matches)", textutil.Count(m.search.result.Count))
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}
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if z.IsDir() {
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right += fmt.Sprintf(" %s files", textutil.Count(int64(z.Files)))
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}
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right += " "
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rw := textutil.Width(right)
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if rw > r.W/2 {
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right = " " + textutil.SizeCompact(size) + " "
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rw = textutil.Width(right)
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}
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cv.TextRight(r.X, r.Y, r.W, right, Style{FG: t.HeaderFg, BG: t.HeaderBg, Attr: Bold})
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sep := " › "
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if t.ASCII {
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sep = " > "
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}
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chain := tr.Ancestors(m.zoom)
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type seg struct {
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id inventory.NodeID
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s string
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}
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segs := make([]seg, len(chain))
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for i, id := range chain {
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segs[i] = seg{id, textutil.Sanitize(tr.Node(id).Name)}
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}
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avail := r.W - rw - 2
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// Drop leading segments until the rest fits; keep at least the last.
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total := func(from int) int {
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w := 0
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for i := from; i < len(segs); i++ {
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w += textutil.Width(segs[i].s)
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if i > from {
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w += textutil.Width(sep)
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}
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}
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if from > 0 {
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w += textutil.Width("…" + sep)
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}
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return w
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}
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from := 0
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for from < len(segs)-1 && total(from) > avail {
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from++
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}
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x := r.X + 1
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if from > 0 {
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x += cv.Text(x, r.Y, "…"+sep, avail, Style{FG: t.Muted, BG: t.HeaderBg})
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}
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for i := from; i < len(segs); i++ {
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if i > from {
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x += cv.Text(x, r.Y, sep, r.X+1+avail-x, Style{FG: t.Faint, BG: t.HeaderBg})
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}
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st := Style{FG: t.Muted, BG: t.HeaderBg}
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if i == len(segs)-1 {
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st = Style{FG: t.Fg, BG: t.HeaderBg, Attr: Bold}
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}
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s := segs[i].s
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if i == len(segs)-1 {
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s = textutil.TruncateLeft(s, max(1, r.X+1+avail-x))
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}
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w := cv.Text(x, r.Y, s, r.X+1+avail-x, st)
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id := segs[i].id
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m.hits = append(m.hits, hit{treemap.Rect{X: x, Y: r.Y, W: w, H: 1}, func(m *Model, _ bool) tea.Cmd { m.zoomTo(id); return nil }})
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x += w
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}
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}
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// paintInfoLine describes the selection (or shows the search editor).
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func (m *Model) paintInfoLine(cv *Canvas, r treemap.Rect) {
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t := m.theme
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cv.Fill(r, " ", t.panel())
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if m.search.editing {
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m.paintSearch(cv, r)
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return
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}
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if m.search.query != nil {
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m.paintFilterSummary(cv, r)
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return
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}
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cv.Text(r.X+1, r.Y, m.describeSelection(), r.W-2, t.panel())
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}
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func (m *Model) describeSelection() string {
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id := m.selectedNode()
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tr := m.tree
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if isGroup(m.sel) {
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if g, ok := m.groupInfo(m.sel); ok {
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return fmt.Sprintf("▸ %s smaller items · %s · %s of %s · Enter lists them",
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textutil.Count(int64(len(g.ids))), textutil.Size(g.size), textutil.Percent(g.size, m.sizeOf(m.zoom)),
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textutil.Sanitize(tr.Node(m.zoom).Name))
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}
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}
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if id == inventory.NoNode {
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return "Nothing selected"
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}
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n := tr.Node(id)
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parts := []string{"▸ " + textutil.Sanitize(n.Name)}
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parts = append(parts, textutil.Size(m.sizeOf(id)))
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if p := n.Parent; p != inventory.NoNode {
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parts = append(parts, textutil.Percent(m.sizeOf(id), m.sizeOf(p))+" of parent")
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}
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if n.IsDir() {
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parts = append(parts, textutil.Count(int64(n.Files))+" files", textutil.Count(int64(n.Dirs))+" dirs")
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if n.Flags&inventory.FlagScanned == 0 && m.scanning {
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parts = append(parts, "scanning…")
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}
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} else {
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parts = append(parts, kindLabel(tr, n))
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}
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if n.MTime > 0 {
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parts = append(parts, "modified "+time.Unix(0, n.MTime).Format("2006-01-02"))
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}
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if n.Errors > 0 {
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parts = append(parts, fmt.Sprintf("%d errors", n.Errors))
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}
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if m.opts.Diff != nil {
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parts = append(parts, textutil.SignedSize(m.opts.Diff.Delta(id, m.sizeMode))+" since "+"snapshot")
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}
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return strings.Join(parts, " · ")
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}
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func kindLabel(tr *inventory.Tree, n *inventory.Node) string {
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switch n.Kind {
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case inventory.KindFile:
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return n.Cat.String()
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case inventory.KindSymlink:
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return "symlink"
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}
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return n.Kind.String()
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}
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var spinner = []string{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"}
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// paintStatus draws the live status bar.
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func (m *Model) paintStatus(cv *Canvas, r treemap.Rect, class sizeClass) {
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t := m.theme
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cv.Fill(r, " ", t.status())
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help := " ? help "
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if class == small {
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help = " ? "
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}
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hw := cv.Text(r.X+r.W-textutil.Width(help), r.Y, help, r.W, Style{FG: t.Muted, BG: t.StatusBg})
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avail := r.W - hw - 1
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if m.toast != "" {
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cv.Text(r.X+1, r.Y, m.toast, avail-1, m.toastStyle)
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return
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}
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st := &m.tree.Stats
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root := m.tree.Node(m.tree.Root())
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files := st.Files + st.Symlinks + st.Others
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var parts []struct {
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s string
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fg Color
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}
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add := func(s string, fg Color) {
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parts = append(parts, struct {
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s string
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fg Color
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}{s, fg})
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}
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switch {
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case m.scanning:
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frame := spinner[int(time.Now().UnixMilli()/100)%len(spinner)]
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if t.ASCII {
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frame = "*"
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}
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add(frame+" scanning", t.Accent)
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case st.Cancelled:
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add("✗ cancelled", t.Warn)
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case m.snapshot:
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add("◉ snapshot", t.Accent)
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default:
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add("✓ complete", t.OK)
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}
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add(textutil.Count(files)+" files", t.StatusFg)
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add(textutil.Size(root.Total(m.sizeMode)), t.StatusFg)
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if m.scanning {
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el := st.Elapsed()
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p := m.scanner.Progress()
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add(textutil.Count(int64(float64(p.Entries)/max(el.Seconds(), 0.001)))+"/s", t.StatusFg)
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if class != small {
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add(fmt.Sprintf("%d workers", p.Workers), t.Muted)
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add(fmt.Sprintf("queue %s", textutil.Count(p.Pending)), t.Muted)
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}
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add(textutil.Duration(el), t.Muted)
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} else if !m.snapshot && class != small {
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add(textutil.Duration(st.Elapsed()), t.Muted)
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}
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if e := st.TotalErrors(); e > 0 {
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add(fmt.Sprintf("%s errors", textutil.Count(e)), t.Err)
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}
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if st.Excluded > 0 {
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add(fmt.Sprintf("%s excluded", textutil.Count(st.Excluded)), t.Warn)
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}
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if st.Incomplete() && !m.scanning && class != small {
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add("totals incomplete", t.Warn)
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}
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x := r.X + 1
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for i, p := range parts {
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s := p.s
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if i > 0 {
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s = " " + s
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}
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if x+textutil.Width(s) > r.X+avail {
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break
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}
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x += cv.Text(x, r.Y, s, avail-x, Style{FG: p.fg, BG: t.StatusBg, Attr: map[bool]Attr{true: Bold}[i == 0]})
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}
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}
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